Flour-sifting machine



(No Model.) 2 Sheets-Sheet 1.

F. W. ANDREB.

PLOUR SIPTING MACHINE.

Patented' Apr. 15, 1.884.

INVENTOR WITNESSES;

BY f ATTORNEY (No Model.) 2 Sheets- Sheet 2.

P. W, ANDREB.

u i FLOUR SIPTINGMAGHINE. No. 296,716.y Patented Apr. 15, 1884.

INYENTGR ATTORNEY llivrren STATES PATENT rtrice..

FRANZ WILHELM ANDRE'II, or CHICAGO, ILLInoIs.

FLOUR-SIFTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 296,716, dated April 15, 1884-.

Application iled August 2, 1883. (No model.)

2b all whom' it may concern:

Be it known that I, FRANZ WILHELM AN- DRE, a subject of the Emperor of Germany, residing at Chicago, in the county of ACook and State of Illinois, have invented certain new and useful Improvements in Flour-Sitting Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

illy invention relates to an improved iioursifting machine; and the object in View is to so construct such a machine that the crushed grain will be thoroughly sil'ted, the coarser and finer particles being separated and discharged through different outlets.

The invention consists in certain novel constructions and combinations of parts, all as will be hereinafter fully described and specilically claimed.

For the better understanding of the invention, reference will be made to the accompanying drawings, which form part of this specification, and in Which- Figure l is a vertical section of the machine;

25 Fig. 2, an end section on line a: to, Fig. l; Fig.

3,21. sectional plan view of parts of the machine; Fig. 4, a section showing certain parts on an enlarged scale, and Fig. 5 views in detail of' the revolving beaters or agitators.

The same letters refer to the same or corre` sponding parts in each of the several views.

Jtrepresents the frame ofthe machine,which is here made rectangular.

B is a shaft which passes through the machine, and protrudes at each end a short dis- Y tance beyond. the ends of the same. At one end, and at apoint near the opposite end, this shaft has bearings'in blocks a o', which are supported on suitable brackets, a2, secured I 40 firmly to the `outer face of the framework.

Keyed to shaft B, by means of pin b or otherwise, is a pulley, G, by means'oi' which motion is imparted to said shaft.

Secured to shaft B so as to revolve `there- 5 with, and at a point between the bearing-block o and frame ofthe machine, is a small studivheel, @,which, in its revolution, meshes with and revolves a larger Wheel, c', of the same character, and secured to a stud, c2, as shown 5o in Fig. 3. Mounted upon this stud c2 is a second stud\vhee1, c3, of a size corresponding to the one c, before referred to. Wheel o, in its revolution, meshes with and revolves a fourth Wheel, c4, secured to a sleeve, e5, and which corresponds in size to the one c,referred to as mounted on stud cz. -Sleeve c5 is loosely mounted on shaft B, and has bearings in uprights d d of frame A, and said sleeve serves as additional bearing at one end of the niachine for shaft B.

Loosely mounted on shaft B at a point near its opposite end is another sleeve, e, which has bearing in an upright, d2. These sleeves are provided with suitable journal-boxes, d3, which are similar to those in common use. Four arms, e, radiate from the sleeves c5 c6 as their centers, and form the spokes of Wheels, of which e are the peripheries. Upon the revolution of these sleeves one edge of each of their peripheries moves in a groove, e2, which grooves are formed in circular pieces e3 and e", secured, respeotively,to uprights d and d6. The inner. edges of peripheries e are connected by the outer set of-beaters, D, the'parts being joined by means of bolts f. The grooves e2, described as being formed in circular vpieces e3 and e4, and in which peripheries e move, are

provided with suitable bushing, to lessen the friction.

Secured to shaft B to revolve therewith, and at the points shown, are two hubs, E,Whieh are provided each with six radial arms, E', said arms being formed slightly concave on their outer ends, as shown in Fig. 2. Secured to these arms by means, of bolts and nuts g g are the inner beaters or strips,F. (Shown in detail in Fig. 5.) These beaters or strips are preferably notched and curved, as shown in that gure, and when secured to arms E rest inthe concavities formedon the outer ends thereof. The arms E are shorter than the ones e, radiating from sleeves of and c6, and the outer set of beaterssecured to the peripheries of said last-named arms revolve about the beaters or strips F. The arms E and e, with their beaters, are all inclosed and revolve within a stationary screen, G, which is secured to three or more cross-pieces, G', as shown, and which is inclosed by a series of segmental strips, G2. q

At the top of the machine there is formed an opening, h, through which the crushed grain is fed into a spout, H, which is situated between the uprights d and d', and passesthrough IOO an opening in said upright d', and dischargesl the crushed grain Within the wire screen G.

In the bottoni of frame A there are formed openings fi il, through which the finer particles are discharged after having been thoroughly sifted through screen G. Suitable inclined guidingboards, I, are provided for directing said nner particles to these openings. Upright d6 is provided with a circular opening, j, through which the coarser particles which are found too large to sift through screen G are discharged into space l', formed between said upright d and an upright, d2, and thence through an opening, j', to some suitable receptacle.

rlhe gearing hereinbefore described as imparting motion to sleeves .c and c are so arranged and are of such size that the shaft B and parts secured thereto will make about one and through it to arms c, outer set of beaters,y

D, and sleeve c, the wheels referred to being of such relative size that the shaft B and its ,connections will make three revolutions to eaclfoiie of sleeves c5 and c and the vparts connected therewith. The crushed grain is then fed through dischargepipe H to the interior of screen G, and upon entering therein is brought in contact with the inner beaters or strips,F, and outer set of beaters,D, by which it is thoroughly shaken up, the finer particles being separated from the coarser ones, the shape of the strips F, as herein shown, being especially adapted for that purpose. rIhe iiner particles are then dropped upon screen G, and are sifted therethrough and guided by boards I to openings t', through which they pass to any suitable receptacle. The coarser particles which are too large to pass through the meshes of screen G are gradually carried to the end of the machine and discharged through opening j in upright d into space I,and thence, through opening j,into anyv suitable receptacle provided for that purpose.

My device willbe found simplein construction, effective in operation, and durable.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination ofthe bolt or screen G, shaft B, and sleeves c5 c, provided with the radiating arms e, having peripheries e', with the circular plates c3 e4, formed with grooves e2, and the outer beaters, D, substantially as described and shown.

2. The bolt or screen G, shaft B, hubs E, radiating arms E', concaved on their outer ends, and beaters or strips F, in combination with the sleeves c5 c, provided with radiating arms e, having peripheries c', circular grooved pieces e e, outer beaters, D, and means for rotating said shaft and the beater carrying sleeves at different speeds,substantially as described and shown.

In testimony whereof I affix my signature in presence of two witnesses. r

FRANZ VILHELM ANDREE.

Witnesses:

M. J. @LAG-Err, ADAM GEO. WHITE. 

